EP3711637B1

EP3711637B1 - Electric kettle

Info

Publication number: EP3711637B1
Application number: EP20164457.2A
Authority: EP
Inventors: Jongok PARK; Jongwon Park
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2019-03-21
Filing date: 2020-03-20
Publication date: 2024-01-10
Anticipated expiration: 2040-03-20
Also published as: EP3711637A1; KR20200112320A; US11445848B2; US20200297145A1

Description

BACKGROUND

The present invention relates to an electric kettle.
In general, an electric kettle is a device that is supplied with electricity to heat water contained in a main body by using a heating means such as a heater. An electric kettle is configured such that a main body is detachable from a base to which power is supplied. The main body is heated in a state of being seated on the base and is separated from the base by holding a handle and lifting the main body. This type of an electric kettle is called many names, such as a wireless electric kettle, a wireless electric pot, and a coffee pot.
In such an electric kettle, a main body may have a complicated shape and may be made of a plastic material so as to facilitate the arrangement of the internal structure. However, when the electric kettle is used for a long time, harmful components of plastics or fine plastic components may be dissolved in hot water, and the electric kettle is vulnerable to scratches, thus causing internal contamination problems.
If a main body is made of a glass material, an electric kettle is excellent in hygiene and looks very good. However, there is a risk of damage due to impact or the like, heavy weight makes it inconvenient to use, and molding is not easy.
Korean Utility Model Registration No. 20-0406420 discloses a wireless electric pot that has a main body made of stainless steel and is capable of heating water contained therein.
US Patent No. 7091455 discloses an electric kettle in which a body where water is heated is provided with an inner container and an outer container, which are made of stainless steel, and the body has a double-layer vacuum structure to improve heat insulation performance.
However, in such a related art, a portion on which a heater for heating water is mounted is additionally provided on a lower surface of a body or a main body, and an assembling work for connecting structures including the body and the heater is difficult.
EP 2 974 630 A1 presents a vacuum electric kettle, comprising: a double-layer stainless steel kettle body and a base for placing the kettle body, a vacuum layer is disposed between a liner and an out shell of the kettle body, a heating disc component is disposed inside the kettle body, a kettle lid and a handle are disposed on the kettle body, and a matched electrical connector is disposed between the heating disc component and the base; wherein the heating disc component comprises: a disc body compounded with a heating body, a seal ring clamping platform is arranged at the edge of the disc body, at least two elastic supporting legs integrated with the disc body are disposed below the clamping platform, a supporting leg locating ring and a seal ring limiting rib are disposed on the liner, a seal ring is disposed between the limiting rib and the clamping platform, and the heating disc component and the kettle body are positioned in a matched mode through the elastic supporting legs and the supporting leg locating ring. No welding process is required between the heating disc component and the kettle body of the vacuum electric kettle, thereby effectively reducing a condemnation rate during the production process.
CN 201 585 852 U presents an electric kettle which comprises a kettle body and an electric heating device. The kettle body comprises an upper kettle body and a lower kettle body which are in threaded connection or are fixedly connected with each other by a clamping buckle in a rotating manner. The lower kettle body comprises a shell and an inner lining, and a vacuum heat-preservation layer is arranged between the shell and the inner lining. As the lower kettle body adopts the vacuum heat-preservation structure, the electric kettle has good heat-preservation performance.
US 2013/213237 A1 presents an electric tea maker comprising a user interface panel, including: a layer of wood, having a front side and a back side, and being provided with one or more thin, and therefore translucent portions; and a transparent body, having a front side and a back side, said front side being provided against the back side of the layer of wood. The tea maker further comprises illumination means, disposed at the back side of the transparent body, and configured to emit light through the transparent body and onto the translucent portions of the layer of wood, so as to make said translucent portions light up on the front side of said layer of wood.
EP 2 763 576 A2 presents a double-walled liquid container having an inner side wall, an outer side wall, which is arranged outside the inner side wall, a retaining structure and a fixing element, which is fitted on the retaining structure. The inner side wall has an upper edge and delimits an interior, which serves for accommodating a liquid. The outer side wall has an upper edge and a lower edge. The retaining structure has an inner retaining element, in which the upper edge of the inner side wall is retained, and an outer retaining element, in which the upper edge of the outer side wall is retained. The fixing element here fixes the lower edge of the outer side wall in relation to the retaining structure.
GB 2 330 064 A presents an electrically heated vessel comprising a moulded plastics vessel body and a non-immersion type underfloor heating element secured sealingly in said vessel body, the moulded plastics vessel body having a plurality of integrally formed abutments spaced about its internal wall surface for locating the heating element within the vessel, a resilient seal being provided around the heating element for sealing the periphery thereof with respect to the vessel wall, and a circlip having formations engaged with complementary formations in the vessel wall retaining the heating element in abutting relationship with said abutments.

SUMMARY

The present invention provides an electric kettle capable of improving heat insulation performance and reducing power consumption.
The present invention provides an electric kettle capable of improving assembling and productivity.
The present invention provides an electric kettle capable of mounting a heating module without separate tools or connecting parts.
The present invention provides an electric kettle capable of sealing a bottom of a space in which water is contained.
The present invention provides an electric kettle facilitate a service of a heating module.
The object is solved by the features of the independent claims. Preferred embodiments are given in the dependent claims.
One embodiment of the present invention includes: a body having an opened upper surface and an opened lower surface and having a double wall structure defined by an outer body and an inner body connected to each other; a mounting portion formed on the inner surface of the inner body; and a heating module inserted through the opened lower surface of the inner body and mounted on the mounting portion to partition the inside of the inner body vertically.
The heating module may include a heating plate made of a metal plate to form the bottom surface of the inner space of the inner body.
A support may be provided at a circumference of a heating plate.
The support may be slanted to face outward as extending downward.
The support may be restrained to a plate mounting portion recessed on the inner surface of the inner body after being elastically deformed when inserted into the inner body.
A packing may be press-fitted between the circumference of the heating plate and the inner surface of the inner body.
A packing mounting portion may protrude from the inside of the inner body corresponding to the packing.
In the inner body, the size of the opened upper surface may be equal to or larger than the size of the opened lower surface.
One embodiment of the present invention includes: a body formed by an outer body and an inner body having a cylindrical shape having an opened upper surface and an opened lower surface, wherein a heat insulation space is formed between the outer body and the inner body; a heating module configured to partition an inside of the inner body vertically and heat water inside the inner body; a mounting portion which is formed on an inner surface of the inner body and on which the heating module is mounted; and a base on which the lower surface of the body is seated and which transfers power applied from an outside to the heating module when the body is seated, wherein the heating module may include: a heating plate inserted through the opened lower surface of the inner body and restrained to the mounting portion to form a bottom surface of the inner body; and a heater provided on a lower surface of the heating plate to generate heat.
Preferably, a lid may be provided to open or close the opened upper surface of the body.
The inner body and the outer body may be made of a stainless material, preferably stainless steel.
An outer surface of the outer body may extend in a vertical direction with the same diameter.
The inner body may be formed in a cylindrical shape having an opened upper surface and an opened lower surface.
Preferably, the opened upper surface of the inner body may be formed to be equal to or larger than the opened lower surface of the inner body.
The heating plate may be made of the same metal material as that of the inner body.
The heating plate may include at least one of: a plate portion formed in a disk shape and forming an upper surface of the heating plate; a plate rim extending downward along a circumference of the plate portion; and a plurality of supports disposed along a circumference of the plate rim and facing outward as extending downward.
Preferably, a diameter formed by the lower ends of the plurality of supports may be formed to be larger than a diameter of the opened lower surface of the inner body, such that the support may be elastically deformed in a process in which the heating plate is inserted into the inner body.
The mounting portion may include a plate mounting portion which is recessed from the inside to the outside of the inner body.
The lower end of the plurality of supports is supported by plate mounting portion when the heating plate is inserted into the body.
An inner diameter of the plate mounting portion may be formed to correspond to a diameter of the lower end of the support.
A packing may be provided between the inner surface of the inner body and the heating plate.
Preferably, a packing may be provided between the inner surface of the inner body and the plate rim to seal a space between the inner body and the plate rim.
The mounting portion may further include a packing mounting portion formed above the plate mounting portion.
The mounting portion may protrude toward the plate rim.
The packing may be press-fitted into the packing mounting portion.
An inner diameter of the packing mounting portion may be formed to be smaller than an inner diameter of the plate mounting portion.
The packing may include: a packing groove which is recessed in a shape corresponding to the packing mounting portion and in which the packing mounting portion is accommodated; and a sealing portion protruding outward from an upper side and a lower side of the packing groove so as to be in close contact with the inner surface of the inner body.
An inner surface of the packing may be formed in a planar shape facing the plate rim.
The entire inner surface of the packing may be pressed in an outward direction by the plate rim.
The heating plate may further include a bent portion protruding outward from a lower end of the plate rim to support a lower end of the packing at a lower side.
The bent portion may be disposed further below than the packing mounting portion.
A vertical width of the plate rim may be formed to correspond to a vertical width of the packing.
The heating module may further include a heater base made of an aluminum material.
The heater may be fixed and mounted to the heater base.
The heater base may be in contact with the heating plate below the heating plate.
The heater base may be formed in a shape corresponding to the heating plate.
The heater base may be molded of an aluminum material with the heater by die casting.
The heater may be disposed inside the heater base.
The heating module may include an upper power module mounted on the heating plate to supply power to the heater.
Preferably, when the body is seated on the base, the upper power module may be in contact with a lower power module provided in the base to receive power.
The lower end of the outer body may be bent to form an outer lower end portion connected to the outer surface of the inner body.
The outer lower end portion may be seated on a circumference of the base.
A bottom cover may be provided at the lower end of the inner body to seal the heating module at a lower side and form a bottom surface of the body.
The bottom cover may protrude further downward than the outer lower end portion and may be accommodated in the base.
The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other features will be apparent from the description and drawings, and from the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of an electric kettle acc. to an embodiment of the present disclosure.
Fig. 2 is an exploded perspective view of the electric kettle.
Fig. 3 is a cross-sectional view taken along line 3-3' of Fig. 1.
Fig. 4 is a cross-sectional view taken along line 4-4' of Fig. 1.
Fig. 5 is a perspective view of a lid, when viewed from below, acc. to the disclosure.
Fig. 6 is an exploded perspective view of the lid, when viewed from below.
Fig. 7 is a cross-sectional view showing a state in which the lid is mounted on a body that is one component of the electric kettle.
Fig. 8 is an exploded perspective view of an upper body that is one component of the electric kettle.
Fig. 9 is a partial enlarged view showing an operation portion of the upper body.
Fig. 10 is a cutaway view showing a connecting structure of the body and the upper body.
Fig. 11 is a cutaway perspective view showing the inside of the electric kettle.
Fig. 12 is a perspective view of the body.
Fig. 13 is a perspective view of the body, when viewed from below.
Fig. 14 is a longitudinal sectional view of the body.
Fig. 15 is a partial enlarged cutaway view of the lower end of the body.
Fig. 16 is a cross-sectional view showing a state in which the body is seated on a base that is one component of the electric kettle.
Fig. 17 is an exploded perspective view showing a state in which a bottom cover of the electric kettle is separated, when viewed from below.
Fig. 18 is an exploded perspective view showing a connecting structure of the body and a heating module that is one component of the electric kettle.
Fig. 19 is an exploded perspective view of the heating module.
Fig. 20 is a view before mounting a heating plate that is one component of the heating module.
Fig. 21 is a view showing a mounting state of the heating plate.
Fig. 22 is a view before mounting a plate packing that is one component of the heating module.
Fig. 23 is a view showing a mounting state of the plate packing.
Fig. 24 is a perspective view of the bottom cover.
Fig. 25 is an exploded perspective view of the bottom cover, when viewed from above.
Fig. 26 is an exploded perspective view of the bottom cover, when viewed from below.
Fig. 27 is a perspective view of the base viewed from above.
Fig. 28 is a perspective view of the base, when viewed from below.
Fig. 29 is a perspective view showing a state in which a base cover of the base is removed.
Fig. 30 is a cross-sectional view showing a mounting state of the heating module and the base.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Hereinafter, specific embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[Overall Structure]

Fig. 1 is a perspective view of an electric kettle according to an embodiment of the present disclosure. Fig. 2 is an exploded perspective view of the electric kettle. Fig. 3 is a cross-sectional view taken along line 3-3' of Fig. 1. Fig. 4 is a cross-sectional view taken along line 4-4' of Fig. 1.
As shown in Figs. 1 to 4, an electric kettle 1 according to an embodiment of the invention is formed in a cylindrical shape as a whole and may be configured to include a base 60, the body 10, an upper body 30, a heating module 50, a lid 20, and a handle 40.
The other components except for the handle 40 are formed in a cylindrical shape and arranged vertically. The handle 40 may be configured to protrude from one side of the upper body 30.
The base 60 is disposed on the bottom of the kettle, preferably on a floor surface.
A power cord is connected to the base 60 such that external power is supplied thereto. The body 10 in an assembled state may be seated on the upper surface of the base 60. The body 10 may be formed in a cylindrical shape to define a heating space 101 in which water is contained and heated therein. The body 10 may be supplied with power in a state of being seated on the base 60. A power supply method of the base 60 and the body 10 may be a power supply method by contact of a power terminal. Also, the power supply method of the base 60 and the body 10 may be an electromagnetic induction method. To this end, the base 60 is provided with a lower power module 64 serving as a primary coil, and the body 10 may be provided with an upper power module 55 serving as a secondary coil.
The body 10 is formed in a cylindrical shape having an opened upper surface and an opened lower surface. The opened lower surface of the body 10 may be covered by the heating module 50, and the upper surface of the body 10 may be covered by the lid 20. Since the heating module 50 forms a part of the lower portion of the body 10, the heating module 50 may also be referred to as a lower body 50.
The heating module 50 includes a heating plate 52 forming the bottom surface of the inside of the body 10, preferably of the heating space 101, and a heater 54 for heating the heating plate 52. The heating plate 52 may be heated by power supplied from the upper power module 55. The heating module 50 may include a bottom cover 56 that forms the lower surface of the body 10.
The upper body 30 may be mounted on the upper end of the body 10. The upper body 30 may be made of the same metal material as that of the body 10, or may be made of another material but have the same texture. The upper body 30 may be formed in a cylindrical or ring shape having a low height being lower than the height of the body. A spout 311 may protrude from one end of the upper body 30 such that water inside the body 10 can be poured.
The handle 40 may be mounted on the side opposite to the spout 311 or facing the spout. The handle 40 may be mounted on a handle cover 32 extending outward from one side of the upper body 30, and may be fixedly mounted on the outer surface of the upper body 30.
The handle 40 may include a handle body 41 inserted into the handle cover 32 and extending downward to be gripped by a user, a handle deco 42 surrounding the outer surface of the handle body 41, and a grip portion 44 forming a part of the outer surface of the handle body 41 facing the body 10. The handle deco 42 may be made of the same metal or the same appearance as those of the body 10 and the handle cover 32. The grip portion 44 may be made of a rubber or a silicone material or plastic so as not to slip when the user grips the handle 40.
The handle cover 32 may be provided with an operation portion 323. The user may input operations such as an on-off operation and/or a temperature control through the operation of the operation portion 323. To this end, a handle printed circuit board (PCB) 43 may be provided inside the handle cover 32, that is, inside the handle 40. An electric wire L connecting the handle PCB 43 and the heating module 50 may be configured to pass through the body 10. Meanwhile, the handle cover 32 may be further provided with a display 322 for displaying the operating state of the electric kettle 1.
Meanwhile, the opened upper surface of the electric kettle 1, that is, the upper surface of the upper body 30, may be covered by the lid 20. The lid 20 may form the upper surface of the electric kettle 1 in a closed state and may contact the circumference of the upper body 30 to seal the inside of the electric kettle 1. When the electric kettle 1 is tilted in a state in which the lid 20 is closed, the electric kettle 1 may be configured such that water is poured to the spout 311 through the lid 20.
Hereinafter, detailed components of the electric kettle 1 will be described in detail. Components not described among the components shown in Figs. 3 and 4 will be described below.

[Structure of Lid]

Fig. 5 is a perspective view of the lid, when viewed from below, according to an embodiment of the present disclosure. Fig. 6 is an exploded perspective view of the lid, when viewed from below. Fig. 7 is a cross-sectional view showing a state in which the lid is mounted on the body that is one component of the electric kettle.
As shown, the lid 20 may be formed in a shape corresponding to the inner cross-section of the electric kettle 1. The appearance of the lid 20 may be formed by combining an upper case 22 forming an upper appearance and a lower case 23 forming a lower appearance.
The upper case 22 may form the upper surface and a part of the circumferential surface of the lid 20, and a lid handle 21 may be mounted at the center of the upper case 22. A coupling hole 211 may be formed at the center of the lid handle 21, and a screw 223a passing through the center of the upper case 22 may be coupled to the coupling hole 211. A lid protrusion 223b and a lid groove 212 connected to each other may be respectively formed on the lower surfaces of the upper case 22 and the lid handle 21 to prevent the lid handle 21 from rotating.
The upper case 22 may include a circular upper surface 221 and a circumferential surface 222 extending downward from the circumference of the upper surface 221. A lid connecting portion 223 protruding downward may be formed at the center of the upper surface 221. The lid connecting portion 223 may be formed in a circular shape, and the inner portion of the lid connecting portion 223 may be recessed to define a space in which the handle lid 20 can be seated. A groove 223c into which a lower rib 233 described below is inserted may be formed at the extended lower end of the lid connecting portion 223.
A plurality of reinforcing ribs 226 may be formed radially from the outer surface of the lid connecting portion 223 to the circumferential surface 222 of the upper case 22.
A water outlet 222a passing through the circumferential surface 222 may be formed at one side of the circumferential surface 222 of the upper case 22. The water outlet 222a may be mounted to be aligned at a position corresponding to the spout 311 as a portion that becomes the outlet of the lid 20 when water inside the electric kettle 1 is poured. The water outlet 222a may be formed in a grill-like shape as shown, or may include a plurality of holes.
Inner walls 224 extending rearward may be formed at both sides of the water outlet 222a. The inner walls 224 may be formed along the circumference of a water inlet 231 described below. The front end of the inner wall 224 may be in contact with both ends of the water outlet 222a. The opened lower end of the inner wall 224 may be covered by the lower case 23 when the upper case 22 and the lower case 23 are connected to each other, and may define a water outlet space 224a to communicate from the water inlet 231 to the water outlet 222a. Therefore, water flowing into the water inlet 231 may be discharged to the water outlet 222a through the water outlet space 224a. That is, water inside the electric kettle 1 may be poured through the spout 311 after passing through the lid 20.
The lower case 23 may be formed in a disk shape corresponding to the upper case 22, and the circumference of the lower case 23 may be connected to the circumference of the upper case 22. A lower rib 233 may protrude from the central portion of the lower case 23 corresponding to the lid connecting portion 223. The lower rib 233 may be inserted into the groove 223c formed at the end of the lid connecting portion 223, and may be joined to the groove 223c by ultrasonic welding in the inserted state. A lid gasket groove 234, on which a lid gasket 24 is mounted, may be formed on the circumference of the lower case 23.
The lid gasket 24 may be formed in a ring shape and may be made of a rubber or a silicone material. The lid gasket 24 may be in close contact with the inner circumferential surface of the upper body 30 in a state in which the lid 20 is mounted on the electric kettle 1, thereby sealing the inside of the electric kettle 1.
A gasket rib 241 protruding outward may be formed on the outer surface of the lid gasket 24. The gasket rib 241 is a portion that is substantially in contact with the inner circumferential surface of the upper body 30. The gasket rib 241 may be completely in contact with the inner circumferential surface of the upper body 30 while being deformed when the lid 20 is mounted or removed.
Meanwhile, a filtering member 25 may be mounted on the water inlet 231. The filtering member 25 may cover the water inlet 231 to filter foreign matters of water flowing toward the water inlet 231. The filtering member 25 may include a filter frame 251 having an opened central portion and a filter 252 for covering the opening. For example, the filter 252 may be provided with a mesh.
The filtering member 25 may be configured to be detachable from the water inlet 231. When the filtering member 25 is not required, the filtering member 25 may be separated from the lid 20 so as to discharge water more smoothly.
In more detail, the filter frame 251 may be formed in a size corresponding to that of the water inlet 231. A sliding rib 253 may protrude from both left and right ends of the filter frame 251, and a filter restraint protrusion 254 may be formed behind the sliding rib 253. The filter restraint protrusion 254 may protrude toward both sides at a position spaced apart from the rear end of the filter frame 251.
A sliding groove 232, into which the sliding rib 253 is inserted, may be formed at both sides of the water inlet 231. The sliding rib 253 may guide the movement of the filtering member 25 while moving along the sliding groove 232.
A filter restraint portion 232a, to which the filter restraint protrusion 254 is caught and restrained, may be formed at the rear of the sliding groove 232. In a state in which the filtering member 25 is mounted on the water inlet 231, the sliding rib 253 may be accommodated inside the sliding groove 232, and the filter restraint protrusion 254 may be caught and restrained to the filter restraint portion 232a. Therefore, the filtering member 25 may maintain the mounted state, and if necessary, may be slidably separated by pulling forward.
Meanwhile, the gasket rib 241 protrudes outward along the circumference of the lid gasket 24, but the gasket rib 241 is not formed at a portion corresponding to the water inlet 231. Also, a gasket recess 242 may be further formed in the lid gasket 24 corresponding to the water inlet 231. Therefore, even in a state in which the lid gasket 24 is mounted on the lid 20, the lid gasket 24 and the filtering member 25 may be prevented from interfering with each other even if the filtering member 25 is slidably detached from the water inlet 231.
The lid 20 may be seated on the upper body 30 in a state of being inserted into the opened upper surface of the electric kettle 1. In a state in which the lid 20 is seated on the upper body 30, the upper end of the upper case 22 is positioned at the same height as that of the upper end of the upper body 30. Therefore, the lid 20 and the upper body 30 may have the sense of unity.
Hereinafter, the seating structure of the lid 20 and the structure of the upper body 30 will be described in detail. Components not described among the components shown in Fig. 7 will be described below.

[Structure of Upper Body]

Fig. 8 is an exploded perspective view of the upper body that is one component of the electric kettle. Fig. 9 is a partial enlarged view showing the operation portion of the upper body. Fig. 10 is a cutaway perspective view showing a connecting structure of the body and the upper body.
As shown in Figs. 8 to 10, the upper body 30 may be mounted on the upper end of the body 10, and the lid 20 may be seated thereon. The upper body 30 may include a body top 31, a seating member 34 connected to the body top 31, and a pair of packings 33 and 35 provided in the seating member 34.
In detail, the body top 31 may be made of a metal material and may be surface-processed to have the same texture as the body 10. When the upper body 30 is mounted on the upper end of the body 10, only the body top 31 may be exposed to the outside, and the seating member 34 may be fixed to the upper end of the body 10. At this time, the body top 31 and the outer surface of the body 10 may be coplanar. So, there is no step and thus a plane surface is provided.
The body top 31 may be formed in a ring shape having the same inner diameter and outer diameter as those of the body. The body top 31 provides a space for accommodating the lid 20 therein.
The recessed spout 311 may be formed at the upper end of one side of the body top 31. The handle cover 32 may be provided at the other side of the body top 31 facing the spout 311.
The handle cover 32 allows the handle 40 to be mounted, may be made of a plate-shaped metal material, and may be formed to accommodate the upper end of the handle 40. The handle cover 32 may form the operation portion on the upper surface 325, and the side surface 326 may extend downward along the circumference of the upper surface of the handle cover 32. In this case, the upper surface 325 of the handle cover 32 is positioned at the same height as that of the upper end of the body top 31, and the lower end of the side surface 326 of the handle cover 32 correspond to the lower end of the body top 31. The opened front end of the handle cover 32 may have a shape corresponding to the outer surface of the body top 31 and may be connected by welding.
A body top opening 313 may be formed at the lower end of the body top 31 corresponding to the handle cover 32. The body top opening 313 may be formed to communicate with the front end of the handle cover 32, and may be formed in a shape recessed at the lower end of the body top 31. The body top opening 313 forms a hole passing through the body 10 when the upper body 30 and the body 10 are connected to each other, and forms a hole through which an electric wire L connected to the heating module 50 passes inside the handle cover 32 and the handle 40.
Meanwhile, as shown in Fig. 9, the upper surface of the handle cover 32 may be provided with an operation portion 323 for the user to perform a press or touch operation and a display 322 for displaying the operating state of the electric kettle 1.
The operation portion 323 may be formed on the upper surface 325 of the handle cover by printing or surface processing. A switch and/or a sensor 323, preferably touch sensor, may be provided below the operation portion 323, that is, at a corresponding position inside the handle cover 32 to sense the operation performed on the operation portion 323.
The display 322 may display or indicate a temperature of water inside the electric kettle 1. The display 322 may include a plurality of holes 321, and LEDs disposed below the holes 321 may be turned on to illuminate the holes 321. The temperatures may be displayed by illuminating the corresponding holes 321 having an adjacent printing or surface processing for indicating the temperature. The user can check the lighting of the corresponding hole 321 to know the current water temperature. In order to implement the operation portion 323 and the display 322, the handle PCB 43 may be disposed inside the handle cover 32.
Meanwhile, a packing groove 312 may be formed along the lower end of the inner surface of the body top 31. The packing groove 312 is a groove in which the upper packing 33 is mounted, and enables the fixed mounting and sealing of the seating member 34.
The seating member 34 may be injection-molded with a plastic material and may connect the upper body 30 and the body 10 and allow the lid to be seated.
In detail, the seating member 34 may be formed in a ring shape and may include a seating member upper portion 341 restrained to the upper body 30 and a seating member lower portion 342 restrained to the body 10. The seating member upper portion 341 may extend vertically and may be sealed in contact with the lid gasket 24 when the lid 20 is mounted.
An upper packing mounting portion 345, on which the upper packing 33 is mounted, may be formed on an outer surface of the seating member upper portion 341. The inner surface of the upper packing may be formed in a shape corresponding to the upper packing mounting portion 345 and may be connected to the upper packing mounting portion 345 in a sealed state. The body top 31 and the seating member 34 may be connected to each other by the upper packing 33 and may have a structure that can be sealed at the same time.
The seating member lower portion 342 may be formed to be slanted such that the inner diameter is narrowed toward the lower side, and a plurality of lid supports 343 may be formed on the inner surface thereof. The lid support 343 protrudes such that the upper end is in contact with the lower surface of the lid 20, and the plurality of lid supports 343 may be disposed in a direction facing each other.
A lower packing mounting portion 346, on which the lower packing 35 is mounted, may be formed on the outer surface of the seating member lower portion 342. The lower packing 35 may be restrained to the inner surface of the body 10 in a state in which the lower packing 35 is mounted on the lower packing mounting portion 346. Therefore, the seating member 34 and the upper body 30 may be connected to the body 10 and may have a structure that can be sealed at the same time.
In detail, in a state in which the upper body 30 is mounted, the seating member 34 is fixed to the body top 31 by the upper packing 33. Therefore, the upper end of the body 10 is inserted between the body top 31 and the seating member 34 so as not to be exposed to the outside. Since the lower packing 35 fixed to the lower end of the seating member 34 is inserted into the body restraint groove 124 formed at the upper end of the inner surface of the body 10, the upper body 30 may maintain the state of being connected to the body 10.
In a state in which the upper body 30 is mounted on the body 10, the inner diameter of the lower end of the upper body 30 may be equal to the inner diameter of the body 10, and the outer diameter of the upper body 30 may be identical to the outer diameter of the body 10. Therefore, in a state in which the upper body 30 and the body 10 are connected to each other, stepped portions are not formed at both the inside and the outside, and the upper body 30 and the body 10 may form the same plane.
Hereinafter, the structure of the body 10 will be described in more detail with reference to the accompanying drawings.

[Structure of Body]

Fig. 11 is a cutaway perspective view showing the inside of the electric kettle. Fig. 12 is a perspective view of the body. Fig. 13 is a perspective view of the body, when viewed from below.
Fig. 14 is a longitudinal sectional view of the body. Fig. 15 is a partial enlarged cutaway view of the lower end of the body.
As shown in Figs. 11 to 15, the body 10 is formed in a cylindrical shape and may be formed to have the same outer diameter as those of the base 60 and the upper body 30. The body 10 may be formed in a cylindrical shape opened vertically, and the opened lower surface of the body 10 may be covered by the heating module 50 described below. That is, water contained in the body 10 may be heated by the heating module 50.
The body 10 includes an inner body 12 and an outer body 11, and a space may be formed between the inner body 12 and the outer body 11, thereby significantly improved heat insulation performance as compared with a single wall structure.
The inner body 12 and the outer body 11 may be made of the same stainless material, preferably stainless steel. The outer body 11 forms the appearance of the body 10, and the inner body 12 forms a space in which water is accommodated or contained. The inner body 12 has a diameter smaller than that of the outer body 11, and thus the inner body 12 may be provided so as to be accommodated inside the outer body 11. Therefore, a space 102 may be formed between the outer body 11 and the inner body 12.
The space 102 between the outer body 11 and the inner body 12 has an air layer formed therein to prevent heat from being directly transferred to the outer body 11. Therefore, the space 102 may be referred to as a heat insulation space 102. The outer body 11 may maintain a relatively low temperature even when the water contained in the inner body 12 is heated to a hot state or boiled state.
The heat insulation space 102 may communicate with a space in which the heating module 50 is disposed and an inner space of the handle 40. Therefore, the electric wire L connected to the handle PCB 43 disposed at the handle 40 may pass through the heat insulation space 102 between the outer body 11 and the inner body 12 and be guided to the space in which the heating module 50 is disposed. Therefore, the space between the outer body 11 and the inner body 12 may be referred to as an electric wire passage or an electric wire guide space.
The body 10 may be formed by connecting the upper end and the lower end of the outer body 11 and the inner body 12 formed in the cylindrical shape. For example, the upper end and the lower ends of the outer body 11 and the inner body 12 may be connected to each other in a stacked state by welding. In this case, the other portions except for the upper end and the lower end of the outer body 11 and the inner body 12 may be spaced apart by a predetermined interval to have a heat insulation structure.
The structure of the upper end of the body 10 will be described in more detail. An outer upper end portion 112 may be formed at the upper end of the outer body 11. The outer upper end portion 112 may extend upward to form the upper end of the outer body 11, but may be formed in an inwardly stepped shape. The outer upper end portion 112 may be inserted into the upper body 30, and the outer surface of the upper body 30 and the outer surface of the outer body 11 may be coplanar. So, the lower end of the body top 31 is overlapping the outer upper end portion 112 of the outer body 11 at its outer side.
An inner upper end portion 122 may be formed at the upper end of the inner body 12. The inner upper end portion 122 may extend upward to form the upper end of the inner body 12. The inner upper end portion 122 extends to the same height as that of the outer upper end portion 112 and may be in surface contact with the outer upper end portion 112. The outer upper end portion 112 and the inner upper end portion 122 may be inserted into a space between the body top 31 and the seating member 34 of the upper body 30 in a connected state. Therefore, the upper end of the body 10 may be covered by the upper body 30 so as not to be exposed
An inner slant portion 123 may be formed along the lower end of the inner upper end portion 122. The inner slant portion 123 may be formed to be slanted such that the inner diameter is narrowed toward the lower side, and may have a slant corresponding to the slanted lower portion of the seating member 34. Therefore, the inner slant portion 123 enables the seating member 34 to be stably supported.
The body restraint groove 124 may be formed along the lower end of the inner slant portion 123. The body restraint groove 124 may be recessed outward such that the lower packing 35 mounted on the upper body 30 is press-fitted. In order to mount the upper body 30, the upper body 30 is inserted from above the body 10. In this case, the lower packing 35 may be press-fitted into the body restraint groove 124 to allow the upper body 30 to be fixed. The inner body 12 may extend downward from the end of the body restraint groove 124 and may extend downward in parallel with the outer body 11 while maintaining a predetermined distance.
Meanwhile, an outer cutout portion 111 and an inner cutout portion 121 may be respectively formed at the upper end of the inner body 12 and the upper end of the outer body 11, which correspond to the mounting position of the handle cover 32. The outer cutout portion 111 and the inner cutout portion 121 may be formed at the same position and may be formed at a position corresponding to the mounting position of the handle 40. The outer cutout portion 111 and the inner cutout portion 121 may communicate with the opened front surface of the handle cover 32. Therefore, when the upper body 30 is mounted on the body 10, the body top opening 313, the outer cutout portion 111, and the inner cutout portion 121 are positioned at positions corresponding to each other, an electric wire outlet 103 through which the electric wire L guided through the heating space 101 between the inner body 12 and the outer body 11 enters and exits may be formed.
The packing mounting portion 127 may be formed at the lower portion of the inner surface of the inner body 12. The packing mounting portion 127 is provided for mounting the heating module 50 and may protrude along the inner surface of the inner body 12 at a position corresponding to the mounting position of the heating module 50. The packing mounting portion 127 may be positioned slightly above the lower end of the outer body 11. Therefore, the heating module 50 may be mounted such that the heating module 50 is accommodated inside the inner body 12.
The packing mounting portion 127 may be formed by bending the inner body 12 and may be formed such that a plate packing 51, which is one component of the heating module 50, is caught and restrained.
A plate mounting portion 126 having an inner diameter larger than that of the packing mounting portion 127 may be formed at the lower end of the packing mounting portion 127. The plate mounting portion 126 is a portion in which a heating plate 52 described below is fixedly mounted and may have an inwardly recessed structure. In this case, the inner diameter of the plate mounting portion 126 may be equal to the inner diameter of the inner body 12 above the packing mounting portion 127. The plate mounting portion 126 has an inner diameter larger than that of the packing mounting portion 127 and an inner lower end portion 125 described below. The vertical width of the plate mounting portion 126 may be determined according to the vertical width of the plate mounting portion 126.
Meanwhile, an electric wire inlet 128 through which the electric wire L passes may be formed on one side of the plate mounting portion 126. The electric wire inlet 128 is a hole through which the electric wire L connected to the heating module 50 passes and may be opened at one side of the plate mounting portion 126 corresponding to the position of the handle 40. That is, the electric wire inlet 128 may be positioned on the same extension line as the electric wire outlet 103 below the electric wire outlet 103.
Therefore, the electric wire L introduced into the electric wire inlet 128 passes through the space between the inner body 12 and the outer body 11 and is guided to the inside of the handle cover 32 through the electric wire outlet 103 disposed at the upper end of the body 10.
The inner lower end portion 125 forming the lower end of the inner body 12 may be formed at the lower end of the plate mounting portion 126. The inner lower end portion 125 may be bent and extended downward from the lower end of the plate mounting portion 126.
The inner diameter of the inner lower end portion 125 may be greater than or equal to the inner diameter of the packing mounting portion 127 such that the heating module 50 is inserted through the inner lower end portion 125. The inner lower end portion 125 may extend further downward than the outer body 11 and may be connected to the bottom cover 56 described below.
Meanwhile, the lower end of the outer body 11 extends to the lower end of the plate mounting portion 126 of the inner body 12. An outer lower end portion 113, which is bent toward the inner side, that is, the outer surface of the inner body 12, is formed at the end of the outer body 11 corresponding to the plate mounting portion 126.
The outer lower end portion 113 is formed at a height corresponding to the lower end of the plate mounting portion 126 and extends to the outer end of the inner body 12. That is, the extended end of the outer lower end portion 113 comes into contact with the lower end of the plate mounting portion 126 or the upper end of the inner lower end portion 125. The outer lower end portion 113 may be connected to the lower end of the plate mounting portion 126 or the upper end of the inner lower end portion 125 by welding. Therefore, the inner body 12 and the outer body 11 have a structure in which the upper end and the lower end are connected to each other.
Meanwhile, one or more body holes 114 may be formed along the outer lower end portion 113. The one or more body holes 114 may be disposed along the outer lower end portion 113 at regular intervals. The one or more body holes 114 may be formed in a shape in which the extended end of the outer lower end portion 113 is cut away. The remaining portions of the outer lower end portion 113 except for the body hole 114 come into contact with the outer surface of the inner body 12. Therefore, the body hole 114 may naturally become an opening communicating with a space between the inner body 12 and the outer body 11 in the process in which the outer lower end portion 113 is connected to or comes into contact with the outer surface of the inner body 12.
The body 10 is made of a stainless material and is formed by a process such as welding. Therefore, the body 10 may be smoothed at its the processed portion by electropolishing and maintain a smooth surface of the internal space in which water is stored or accommodated. Also, the inner and outer surfaces of the body 10 may have corrosion resistance through electropolishing. For this reason, the body 10 is subjected to the electropolishing process after the inner body 12 and the outer body 11 are connected to each other.
In order for electropolishing in a state in which the inner body 12 and the outer body 11 are connected to mold the body 10, electropolishing is performed after the body 10 is immersed in an electrolyte. In this process, due to the structural characteristics of the body 10, the electrolyte is inevitably introduced into the heat insulation space 102 between the inner body 12 and the outer body 11. That is, the electric wire inlet 128 and the electric wire outlet 103 are opened in a state in which the body 10 is molded, and when the body 10 is immersed in the electrolyte, the electrolyte is introduced through the electric wire inlet 128 and the electric wire outlet 103. Therefore, the electrolyte is inevitably introduced between the inner body 12 and the outer body 11.
When the body 10 is lifted after the electropolishing is completed, as shown in Fig. 15, the electrolyte between the inner body 12 and the outer body 11 may be smoothly discharged downward through the body hole 114. In addition, even when the body 10 is washed after the electropolishing is completed, the electrolyte between the inner body 12 and the outer body 11 is naturally discharged through the body hole 114 when the body 10 is immersed and washed in a cleaning solution and then lifted. Therefore, even when the electrolyte is removed after the electropolishing process and the body 10 is washed after the electropolishing, the remaining liquids of the body 10 may be smoothly discharged.
Meanwhile, a see-through window 13 may be formed in the body 10. The see-through window 13 allows the user to check the water level or the boiling state of water in the electric kettle 1 from the outside of the electric kettle 1 without opening the lid.
The see-through window 13 may extend in the vertical direction and may be fixedly mounted on each of the inner body 12 and the outer body 11. In this case, the see-through window 13 may be mounted on the body 10 in a sealed state. The see-through window 13 may include a see-through window front surface 131 exposed to the outside, a see-through window side surface 132 bent vertically along the circumference of the see-through window front surface 131, and a see-through window circumference portion 134 bent outward along the extended end of the see-through window side surface 132.
An inner mounting portion 117 and an outer mounting portion 115 for mounting the see-through window 13 may be formed in the inner body 12 and the outer body 11. The inner mounting portion 117 and the outer mounting portion 115 may be opened at positions facing each other, such that the see-through window 13 passes through the body 10 and is mounted therein.
In detail, the inner mounting portion 117 may be opened to pass through the inner body 12. The inner mounting portion 117 may be recessed in an outwardly stepped shape and may be formed along the circumference of the see-through window 13. That is, the inner mounting portion 117 extends from the inner body 12 toward the outer body 11, and the extended end thereof is bent inward to form an opening in which the see-through window 13 can be mounted. The see-through window circumference portion 134 bent outward along the circumference of the see-through window 13 may be disposed in the stepped circumference of the inner mounting portion 127.
A see-through window gasket 135 may be mounted between the inner mounting portion 117 and the see-through window circumference portion 134. The see-through window gasket 135 is sealed between the inner mounting portion 117 and the see-through window circumference portion 134 to prevent leakage of water inside the inner body 12. The see-through window gasket 135 may be formed in a shape corresponding to the see-through window circumference portion 134 and the inner mounting portion 117. The see-through window gasket 135 may be inserted along the opened end of the inner mounting portion 117 to maintain a state of being fixedly mounted on the inner mounting portion 117.
Meanwhile, when the see-through window gasket 135 and the see-through window circumference portion 134 are seated on the inner mounting portion 117, the see-through window circumference portion 134 and the inner surface of the inner body 12 may be coplanar. Therefore, since portions protruding inward from the inner body 12 are not formed in a state in which the see-through window 13 is fixedly mounted on the body 10, the internal structure is simple and easy to clean.
The outer mounting portion 115 may be opened to pass through the outer body 11 and may be opened in a shape corresponding to the see-through window front surface 131. The outer mounting portion 115 may be bent toward the inner body 12. Therefore, the outer mounting portion 115 may support the see-through window side surface 132 in a close contact state. In this case, the see-through window front surface 131 and the outer body 11 may be coplanar. Therefore, the outer surfaces of the see-through window 13 and the outer body 11 are not protruded or recessed in a state in which the see-through window 13 is mounted, thereby further improving the appearance.
In addition, the see-through window 13 is in close contact with the circumference of the outer mounting portion 115 in a mounted state and is sealed by the inner mounting portion 117 and the see-through window gasket 135, thereby preventing water from leaking from the body 10.
If necessary, an additional gasket may be further provided along the outer mounting portion 115. Since the additional gasket further seals a gap between the outer mounting portion 115 and the see-through window 13, no gap occurs between the outer body 11 and the see-through window 13.
Hereinafter, the heating module 50 will be described in more detail with reference to the accompanying drawings.

[Structure of Heating Module]

Fig. 16 is a cross-sectional view showing a state in which the body is seated on a base that is one component of the electric kettle.
As shown in Fig. 16, the heating module 50 may be mounted below the body 10. The heating module 50 covers the opened lower surface of the body 10 and forms the bottom surface of the heating space 101 provided in the body 10. The heating module 50 may form the appearance of the lower surface of the body 10 in a state in which the heating module 50 is mounted.
The heating module 50 may include a heating plate 52 forming the bottom surface of the heating space 101, a plate packing 51 for sealing a gap between the heating module 50 and the inner body 12 around the heating plate 52, a heater 54 for heating the heating plate 52, and an upper power module 55 for supplying power to the heater 54. The heating module 50 may further include a bottom cover 56 for covering the remaining components except for part of the upper power module 55 so as not to be exposed to the lower side of the body 10.
Meanwhile, since the heating module 50 and the bottom cover 56 are mounted through the opened lower surface of the body 10 and form at least part of the lower portion of the body 10, the heating module 50 and the bottom cover 56 may also be referred to as a bottom body. The body 10 may be seated on the base 60 in a state in which the bottom body is completely assembled. That is, in order to operate the electric kettle 1, the body 10 in which the bottom body is assembled must be seated on the base 60.
In a state in which the body 10 is seated on the base 60, the upper power module 55 of the body 10 and the lower power module 64 of the base 60 are in contact with each other, thereby enabling power to be supplied. In this state, the heater 54 may be heated by the supply of power to boil water.
Fig. 17 is an exploded perspective view showing a state in which the bottom cover of the electric kettle is separated, when viewed from below. Fig. 18 is an exploded perspective view showing a connecting structure of the body and the heating module that is one component of the electric kettle. Fig. 19 is an exploded perspective view of the heating module.
As shown, the heating module 50 may be disposed inside the opened lower surface of the body 10. When the heating module 50 separates the bottom cover 56, the remaining components may be exposed through the opened lower surface of the body 10.
In particular, the upper power module 55 may be disposed at the center of the opened lower surface of the body 10, and the heater 54 is provided outside the upper power module 55 to heat the heating plate 52. The bottom cover 56 may be provided with a cover PCB 563 for supplying power to the heater 54.
In detail, the upper power module 55 is disposed at the center of the heating module 50. The upper power module 55 may be mounted at the center of the heater base 53. The heater base 53 may be connected to the lower surface of the heating plate 52, and the heater 54 may be mounted on the heater base 53.
The heater 54 may be configured as a sheath heater. The heater 54 may be disposed on a more outer side than the upper power module 55 and disposed along the circumference of the heating plate 52. Both ends of the heater 54 may be spaced apart from each other at adjacent positions, and a connection terminal 563c may be exposed at both ends of the heater spaced apart from each other and may be connected to the cover PCB 563 by an electric wire.
The heater 54 may be mounted on the heater base 53. The heater base 53 may be formed in a disk shape having a size corresponding to a size of the lower surface of the heating plate 52, and the heater 54 may be mounted on the heater base 53. The heater base 53 is made of a material having high thermal conductivity, preferably aluminum or an aluminum alloy, such that the heat of the heater 54 can be uniformly transferred to an entire plate portion 521 of the heating plate 52. The heater base 53 and the heater 54 may be integrally formed by die casting.
A cover coupling hole 532 for mounting the bottom cover 56 may be formed in the heater base 53, and a screw passing through the bottom cover 56 may be coupled to the cover coupling hole of the heater base 53. A temperature sensor mounting hole 531 in which the temperature sensor 57 is mounted may be further formed at the other side of the heater base 53.
The heater base 53 may be mounted on the lower surface of the heating plate 52. In this case, the heater base 53 may be completely in close contact with the lower surface of the heating plate 52, and may be blazing-processed to be integrally connected to the heating plate 52 so as to effectively transfer heat.
The heating plate 52 may form the bottom surface of the heating space 101, and at the same time, the heating module 50 may be fixedly mounted on the inside of the body 10. The heating plate 52 may be made of the same stainless material as that of the inner body 12 and may be inserted and mounted into the opened lower portion of the inner body 12 in a state of being connected to the heater base 53.
The heating plate 52 may be fixedly mounted on one side of the lower portion of the inner body 12 and may form a space in which the heater base 53, the heater 54, and the upper power module 55 are disposed. The heating plate 52 may include a plate portion 521 forming the bottom surface of the heating space 101 inside the inner body 12, a plate rim 522 on which the plate packing 51 is mounted around the plate portion 521, and a support 524.
In detail, the plate portion 521 may be formed in a circular shape and may have a diameter slightly smaller than the inner diameter of the inner body 12. The upper and lower surfaces of the plate portion 521 may have a planar structure, and the heater base 53 may be mounted on the lower surface of the plate portion 521. The size of the plate portion 521 is equal to the size of the heater base 53, Therefore, when the heater base 53 generates heat, the heater base may heat the entire plate portion 521, such that the entire bottom surface of the inside of the heating space 101 is heated.
A through hole 521a may be formed at one side of the plate portion 521. The through hole 521a is opened at a position corresponding to the temperature sensor mounting hole 531, and the temperature sensor 57 is fixedly mounted in the through hole 521a. In this case, a sensor packing 571 is provided around the temperature sensor 57, and the sensor packing 571 is mounted in the through hole 521a to seal the through hole 521a. The temperature sensor 57 is exposed above the plate portion 521 to sense, preferably directly sense the temperature of water contained in the heating space 101.
Meanwhile, a plate rim 522 may be formed along the circumference of the plate portion 521. The plate rim 522 may be vertically bent downward from the circumference of the plate portion 521. The height of the plate rim 522 may correspond to the vertical height of the plate packing 51, and a bent portion 523 bent outward may be formed at the lower end of the plate rim 522 to allow the plate packing 51 to be seated on the plate rim 522.
The plate packing 51 may be mounted on the plate rim 522 and may be formed along the circumference of the plate portion 521. The plate packing 51 may seal a gap between the inner body 12 and the plate portion 521. The plate packing 51 may be inserted into the inner body 12 in a state of being mounted on the plate rim 522 and may be restrained to the packing mounting portion 127 of the inner body 12. Therefore, the heating plate 52 may be fixed to the inside of the inner body 12 by the plate packing 51, and at the same time, water may be prevented from leaking between the heating plate 52 and the inner body 12.
The plate packing 51 may have a packing groove 511 recessed in a shape corresponding to the packing mounting portion 127. The packing groove 511 may be formed along the outer surface of the plate packing 51, and the packing mounting portion 127 may be inserted into the packing groove 511 to fix the plate packing 51 and the heating plate 52 connected to the plate packing 51.
An upper sealing portion 512 and a lower sealing portion 513 may be formed above and below the packing grooves 511, respectively. The packing groove 5111 may be formed to have a size corresponding to that of the packing mounting portion 127.
The upper sealing portion 512 may protrude outward from the upper side of the packing groove 5111 and may be in close contact with the inner surface of the inner body 12 above the packing mounting portion 127. The lower sealing portion 513 may protrude outward from the lower side of the packing groove 5111 and may be in close contact with the inner surface of the inner body 12 below the packing mounting portion 127. The upper sealing portion 512 and the lower sealing portion 513 may be formed to have a rounded protruding portion, and thus may be press-fitted between the inner body 12 and the heating plate 52.
Meanwhile, the bent portion 523 at the lower end of the plate rim 522 may be formed in a shape slightly stepped from the plate rim 522 and may maintain a state in which the plate packing 51 is seated. A plurality of supports 524 may be formed at the lower end of the plate rim 522. The plurality of supports 524 may be arranged at regular intervals and may be arranged along the circumference of the plate rim 522.
The support 524 may extend downward. The support 524 may be formed to be slanted outward as the support 524 extends downward. Each of the supports 524 may be formed in a plate shape, and thus, may be elastically deformed when a force is applied toward the center of the heating plate 52.
The extended end of the support 524 extends to be supported to the lower end of the plate mounting portion 126. The lower end of the support 524 may extend to be slanted toward the more outer side than the outer diameter of the inner lower end portion 125. Therefore, in the process of inserting the heating plate 52, the support 524 may be pressed in contact with the inner surface of the inner lower end portion 125 while passing through the inner lower end portion 125 and may be elastically deformed toward the inner side.
When the heating plate 52 and the plate packing 51 are inserted up to the set plate rim 522, the support 524 is restored in the outward direction while passing through the inner lower end portion 125 as shown in Fig. 16, and the lower end of the support 524 is caught and restrained to the lower edge of the plate mounting portion 126 in the inside of the plate mounting portion 126. Therefore, the heating plate 52 may maintain the mounted state and may maintain a firmly connected state without moving downward to be arbitrarily separated or generating a gap.
Meanwhile, the remaining heating module 50 except the bottom cover 56 may be completely accommodated inside the body 10. When the bottom cover 56 is mounted, the remaining components of the heating module 50 provided inside the body 10 are covered and the appearance of the lower surface of the body 10 may be formed.
A cover hole 560c may be formed at the center of the bottom cover 56, and part of the upper power module 55 may be exposed through the cover hole 560c. The bottom cover 56 may be provided with a cover plate 565 for opening or closing part of the bottom cover 56.
Hereinafter, the mounting structure of the heating module 50 will be described in detail with reference to the accompanying drawings. Figs. 20 to 23 show the sequential processes of mounting the heating module 50.

[Mounting Structure of Heating Module]

Fig. 20 is a view showing a state before mounting the heating plate that is one component of the heating module.
As shown in Fig. 20, the body 10 is prepared in such a state that the outer body 11 and the inner body 12 are connected to each other, and the overall structures such as the packing mounting portion 127, the plate mounting portion 126, and the inner lower end portion 125 are molded. The body 10 may be in a state in which foreign matters of the processed portion including the connecting portion are removed through electropolishing.
Before the heating module 50 is mounted, the heater 54 and the heater base 53 may be connected to each other by die casting. The heating module 50 may be mounted on the lower surface of the heating plate 52 in a state in which the heater 54 and the heater base 53 are connected to each other. That is, the mounting of the heating module 50 is started in a state in which the heater base 53 and the heater 54 are mounted on the heating plate 52.
Meanwhile, in this state, the inner diameter D3 of the inner lower end portion 125 may be formed to be slightly smaller than the outer diameter D1 of the lower end of the support 524 of the heating plate 52. The inner diameter D3 of the inner lower end portion 125 may be formed to be slightly larger than the outer diameter of the bent portion 523. That is, the support 524 may extend to be slanted toward the outside, but may extend to be slanted more outwardly than the bent portion 523. The support 524 may be formed in an elastically deformable plate shape.
The plate mounting portion 126 may be formed above the inner lower end portion 125. The inner diameter D2 of the plate mounting portion 126 may be formed to be larger than the inner diameter D1 of the inner lower end portion 125. Therefore, the lower end of the plate mounting portion 126 and the upper end of the inner lower end portion 125 may provide a stepped structure. The inner diameter D2 of the plate mounting portion 126 may be formed to be slightly larger than or equal to the outer diameter D3 of the lower end of the support 524.
Meanwhile, in the prepared state, the heating plate 52 is inserted into the opened lower surface of the inner body 12 such that the plate portion 521 faces upward. At this time, the bent portion 523 of the heating plate 52 may be smoothly inserted into the inside of the inner body 12, but the lower end of the support 524 may be elastically deformed in the inward direction while contacting the inner surface of the inner body 12.
Fig. 21 is a view showing the mounting state of the heating plate.
When the heating plate 52 is continuously inserted upward from the inside of the body in the state shown in Fig. 20, the lower end of the support 524 is moved upward in contact with the inner surface of the inner lower end portion 125, and the support 524 maintains a state of being elastically deformed inward. In this manner, the heating plate 52 may be inserted until the support 524 completely passes through the inner lower end portion 125.
At the moment when the support 524 completely passes through the inner lower end portion 125, the support 524 may be restored to its original shape by elasticity. That is, the lower end of the support 524 may be restored outward in a state of being deformed inward. As a result, the lower end of the support 524 may be accommodated on the stepped lower surface of the plate mounting portion 126. In this case, the lower end of the support 524 may be positioned at the lower edge of the plate mounting portion 126 such that the heating plate 52 is temporarily fixed.
Meanwhile, in a state in which the heating plate 52 is fully inserted as shown in Fig. 21, the plate portion 521 may be positioned further above than the packing mounting portion 127, and the packing mounting portion 127 may be positioned at a position corresponding to the plate rim 522. At this time, the packing mounting portion 127 and the plate rim 522 maintain a state of being spaced apart from each other.
Fig. 22 is a view showing a state before mounting the plate packing that is one component of the heating module.
As shown, the plate packing 51 is mounted after inserting the heating plate 52 in a state of being temporarily fixed to the inside of the inner body 12 through the opened lower surface of the inner body 12.
The plate packing 51 is press-fitted toward the packing mounting portion 127 in a state in which the lower sealing portion 513 faces downward. In this case, the plate packing 51 may be inserted into a space between the packing mounting portion 127 and the plate rim 522. In this case, the thickness of the plate packing 51 may be larger than the distance between the packing mounting portion 127 and the plate rim 522, and the plate packing 51 may be elastically deformed when the plate packing 51 is press-fitted.
The lower sealing portion 513 is first inserted between the packing mounting portion 127 and the plate rim 522, and the plate packing 51 is inserted into a space between the plate rim 522 and the packing mounting portion 127 narrow due to the rounded shape of the lower sealing portion 513. In order to more smoothly insert the plate packing 51, the plate packing 51 may be inserted by using a jig or a separate tool.
Fig. 23 is a view showing the mounting state of the plate packing.
As shown in Fig. 23, when the plate packing 51 is fully inserted, the space between the inner surface of the inner body 12 and the heating plate 52 may be completely sealed. At this time, the plate packing 51 maintains a state of being elastically deformed by pressing.
In detail, when the plate packing 51 is press-fitted, the packing mounting portion 127 is accommodated inside the packing groove 5111 to be caught and restrained. In such a state, the plate rim 522 is in contact with the inner surface of the plate packing 51. The plate rim 522 and the plate packing 51 may be formed in a planar shape corresponding to each other. Therefore, the plate rim 522 presses the plate packing 51 in the outward direction as a whole.
As a result, the upper sealing portion 512 and the lower sealing portion 513 of the plate packing 51 may be deformed so as to be in close contact in a more outward direction. As a result, when the press-fitting of the plate packing 51 is completed, the upper and lower sides of the plate mounting portion 127 may be completely sealed by the plate packing 51.
At this time, the lower end of the plate packing 51 may be seated on the bent portion 523, and the bent portion 523 may prevent the plate packing 51 from deviating downward from the correct position. That is, in any case, the plate packing 51 does not release downward or fall off.
If necessary, after the plate packing 51 is first mounted on the packing mounting portion 127 inside the body 10 by using a jig or the like, the heating plate 52 may be press-fitted into the plate packing 51 such that the plate packing 51 completely seals the space between the inner body 12 and the heating plate 52.
Meanwhile, the inner body 12 is formed in a cylindrical shape, and the inner diameter of the inner body 12, except for the inner lower end portion 125 and the packing mounting portion 127, may be equally formed.
Therefore, when the heating module 50 is to be separated, the plate packing 51 may be separated upward. The plate packing 51 is compressed to be in close contact between the inner body 12 and the plate rim 522, but the plate packing 51 may be removed by using a separate mechanism or the like. At this time, there is no region in which the inner diameter becomes narrower in the upper portion of the packing groove 5111. Therefore, the plate packing 51 may be easily separated.
In a state in which the plate packing 51 is removed, the heating plate 52 is pushed upward. The heating plate 52 may be deformed inward while the lower end of the support 524 passes through the packing mounting portion 127 again in the process of moving upward. The heating plate 52 may move upward while deviating from the packing mounting portion 127.
When the heating plate 52 is moved more upward than the packing mounting portion 127, the inner body 12 has no region in which the inner diameter becomes more narrower. Therefore, the heating plate 52 may be separated from the opened upper surface of the body 10.
Meanwhile, the upper power module 55 may be assembled to the heating plate 50 in a state in which the heating plate 50 is mounted on the body 10.
Fig. 24 is a perspective view of the bottom cover. Fig. 25 is an exploded perspective view of the bottom cover, when viewed from above. Fig. 26 is an exploded perspective view of the bottom cover, when viewed from below.
As shown in Figs. 24 to 26, the bottom cover 56 may be injection-molded of a plastic material and may be connected to the lower end of the body 10 to cover the opened lower surface of the body 10 and at the same time form the appearance of the lower surface of the body.
The bottom cover 56 may include a cover bottom surface 560 and a cover rim 561 bent along the circumference of the cover bottom surface 560. The cover bottom surface 560 may include a cover slant portion 560a in the center of the cover bottom surface 560 and a cover flat portion 560b outside the cover slant portion 560a. The cover slant portion 560a may have a slant that is lowered from the center toward the outside, and the cover flat portion 560b formed up to the cover rim 561 in parallel to the ground may be formed at the outer end of the cover slant portion 560a. So, the middle portion of the cover bottom surface 560 may be located at a higher level than the flat portion 560b.
A cover hole 560c is formed at the center of the cover bottom surface 560, that is, at the center of the cover slant portion 560a, and the upper power module 55 is exposed through the upper module hole 560c. Therefore, when the body 10 is mounted on the base 60, the body 10 may be in contact with the lower power module 64.
The bottom cover 56 may cover all components of the heating module 50 except for the upper power module 55. A plurality of screw holes 568, to which screws are coupled, are formed along the circumference of the upper module hole 560c. The screw hole 568 may be formed at a position corresponding to the coupling hole 532 of the heater base 53. Therefore, the screw passes through the screw hole 568 and is coupled to the coupling hole 532, such that the bottom cover 56 can be firmly fixed to the body 10.
The cover rim 561 may be formed around the bottom surface 560 of the bottom cover 56. The cover rim 561 may extend upward along the circumference of the bottom cover 56 and may cover the inner lower end portion 125 from the outside. Therefore, when the bottom cover 56 is connected, the cover rim 561 may cover the inner lower end portion 125 from the outside. In this case, the inner surface of the cover rim 561 and the outer surface of the inner lower end portion 125 may be in close contact with each other such that the bottom cover 56 can maintain a stably and firmly connected state.
A plurality of bottom ribs 569 extending radially around the upper module hole 560c may be formed inside the bottom cover 56. The bottom ribs 569 may serve as a partition wall for reinforcing the strength of the bottom cover 56 and blocking water from flowing into the cover PCB 563 when water leakage occurs.
An electric wire groove 569a is recessed in the bottom ribs 569 such that the electric wires can be guided through the bottom ribs 569 to the cover PCB 563. In addition, a plurality of electric wire fixing portions 566, which are formed in a ring shape so as to fix the electric wires, may be formed between the plurality of bottom ribs 569.
Meanwhile, the central portion of the bottom cover 56, in which the upper power module 55 is positioned, may be formed to be slightly high. The cover slant portion 560a may be formed to have a slant that is lowered toward the outside, thereby preventing water from flowing into the upper power module 55 in the case of a water leakage situation.
A cover drain hole 567 may be formed in the cover flat portion 560b of the bottom cover 56. The cover drain hole 567 may be positioned outside the bottom cover 56 having a relatively low height and may pass through the cover bottom surface 560 of the bottom cover 56. Therefore, the water introduced into the bottom cover 56 flows outward along the cover slant portion 560a and is discharged downward through the cover drain hole 567, thereby preventing the water from accumulating inside the bottom cover 56. Therefore, the upper power module 55 and the cover PCB 563 provided in the bottom cover 56 can be protected from leakage.
Meanwhile, the bottom cover 56 may be provided with a PCB accommodating portion 564. The PCB accommodating portion 564 may form a space in which the cover PCB 563 is accommodated and may be formed in a shape in which the lower surface and both extended ends are opened. The PCB accommodating portion 564 may be disposed over the half region of the bottom cover 56.
In detail, the PCB accommodating portion 564 may be positioned on one side of both sides with respect to the center of the bottom cover 56 and may be positioned below the heater 54. A space in which the electric wires connected to the cover PCB 563, the upper power module 55, and the heater 54 are disposed may be provided at one side of the bottom cover 56 opposite to the position at which the PCB accommodating portion 564 is formed. The cover drain hole 567, the bottom rib 569, and the electric wire fixing portion 566 may also be disposed at a position opposite to the position of the PCB accommodating portion 564.
The PCB accommodating portion 564 may be formed along an accommodating portion opening 564a of the bottom of the bottom cover 56 and may be formed along the circumference of the bottom cover 56. The PCB accommodating portion 564 may be formed to have a predetermined height so as to accommodate the cover PCB 563.
Both ends of the PCB accommodating portion 564 may be opened toward the inner side of the bottom cover 56. A terminal 563c, to which the electric wire is connected, may be provided at the end of the cover PCB 563 exposed through the opening.
The PCB accommodating portion 564 may include a side surface portion 564c extending vertically along the inner edge and the outer edge of the accommodating portion opening 564a and an upper surface portion 564d connecting both ends of the side surface portion 564c. Meanwhile, since a mica sheet 565 is mounted on the upper surface portion 564d, the upper surface portion 564d may be referred to as a sheet mounting portion 564d.
The mica sheet 565 is formed to have a size and a shape corresponding to those of the cover PCB 563 and is disposed on the upper surface of the sheet mounting portion 564d. Therefore, the cover PCB 563 may be thermally and electrically insulated such that the cover PCB 563 is protected from abnormal operations.
Sheet fixing portions 564b may be formed in the sheet mounting portion 564d so as to fix the mica sheet 565. The sheet fixing portions 564b may be formed at both ends of the sheet mounting portion 564d, and an additional sheet fixing portion 564b may be further formed between the sheet fixing portions 564b on both sides. The sheet fixing portions 564b may restrain the end of the mica sheet 565 such that the mica sheet 565 maintains the state of being mounted on the sheet mounting portion 564d.
Meanwhile, the cover PCB 563 may be provided inside the PCB accommodating portion 564 and may have a shape corresponding to the accommodating portion opening 564a. The cover PCB 563 may be mounted on the cover plate 565 that covers the accommodating portion opening 564a.
The cover PCB 563 may be connected to the heater 54 and the upper power module 55 and may be configured to supply power to the heater 54. The cover PCB 563 may be connected to the handle PCB 43 provided in the handle cover 32 such that the operation of the heater 54 is controlled by the operation of the operation portion 323.
The cover PCB 563 may be provided with a buzzer 563b. When it is necessary to notify the operation of the electric kettle 1, the buzzer 563b may notify the state by outputting a beep sound. For example, when the power is supplied by mounting the assembled body 10 on the base 60, the buzzer 563b may output a notification sound to allow the user to recognize that the electric kettle is ready to operate, without checking the display. Instead of the buzzer 563b, a speaker may be provided. The buzzer 563b may be referred to as a sound output device.
Meanwhile, a PCB hole 563a may penetrate through the cover PCB 563. The PCB hole 563a may be formed to have a size corresponding to that of a fixing boss 562a protruding from the cover plate 565. Therefore, when the cover PCB 563 is mounted on the cover plate 565, the fixing boss 562a passes through the PCB hole 563a. The cover PCB 563 may maintain the state of being fixedly mounted on the cover plate 565 and may be detached together with the cover plate 565 when the cover plate 565 is detached.
The cover plate 565 may be formed in a shape corresponding to that of the accommodating portion opening 564a and may cover the accommodating portion opening 564a. The cover plate 565 may be provided with a pair of fixing ends 562b and the fixing boss 562a so as to be fixedly mounted on the bottom cover 56 in the mounted state.
The fixing boss 562a is formed at the center of the cover plate 565 and protrudes upward. A screw, which passes through the fixing boss 562a, may be coupled to a coupling portion 761b protruding downward from the inside of the PCB accommodating portion 564 to fix the cover plate 565. The fixing ends 562b may protrude from both ends of the cover plate 565 and may be inserted, caught, and restrained into both ends of the accommodating portion opening 564a when the cover plate 565 is mounted. The fixing ends 562b may protrude upward and forward from the end of the cover plate 565 to be caught and restrained to both sides of the accommodating portion opening 564a.
Meanwhile, a plurality of support ribs 562c may protrude from the cover plate 565. The support ribs 562c may connect inner end and the outer end of the cover plate 565, and a plurality of support ribs 562c may be radially arranged. Therefore, the cover PCB 563 may be supported from below when the cover PCB 563 is mounted, and the cover PCB 563 may maintain a stably mounted state.
Meanwhile, in order to use the electric kettle 1 in a state in which the bottom cover 56 is mounted on the body 10, the electric kettle 1 may be seated on the base 60. When the body 10 is seated on the base 60, the upper power module 55 and the lower power module 64 may be in contact with each other and may be in a state in which power can be supplied to the heating module 50.
Hereinafter, the structure of the base 60 will be described in more detail with reference to the accompanying drawings.

[Structure of Base]

Fig. 27 is a perspective view of the base that is one component of the electric kettle, when viewed from above. Fig. 28 is a perspective view of the base that is one component of the electric kettle, when viewed from below. Fig. 29 is a perspective view showing a state in which the base cover of the base is removed. Fig. 30 is a cross-sectional view showing the mounting state of the heating module and the base.
As shown in Figs. 27 to 30, the base 60 may be formed in a shape corresponding to the cross-sectional shape of the body 10 and is configured to allow the body 10 to be seated on the upper surface of the base 60. Power can be supplied to the body 10 in a state in which the body 10 is seated on the base 60, and the outer surface of the body 10 and the outer surface of the base 60 fare coplanar, thereby providing the sense of unity.
In detail, the overall appearance of the base 60 is formed by the base cover 61 forming the upper surface, the base body 62 forming the lower surface, and the side plate 63 forming the circumferential surface between the base body 62 and the base cover 61.
The base cover 61 is formed to have a diameter corresponding to that of the body 10 and is formed to allow the lower surface of the body 10 to be seated. The base cover 61 includes a base upper surface 611 forming the upper surface of the base 60 and a base cover rim 612 protruding upward along the circumference of the base upper surface 611.
The base upper surface 611 is a portion on which the bottom cover 56 is seated when the body 10 is mounted on the base 60, and may be formed in a shape corresponding to that of the bottom surface of the bottom cover 56.
In detail, a lower module hole 611c, through which the lower power module 64 passes, may be formed at the center of the base upper surface 611. The lower power module 64 may protrude upward through the lower module hole 611c.
The base upper surface 611 may include an upper slant portion 611a and an upper flat portion 611b. The upper slant portion 611a is formed to be slanted from the lower module hole 611c toward the outside. The upper flat portion 611b may be formed to be horizontal to the ground from the upper slant portion 611a to the base cover rim 612. Thus, the flat portion 611b is located at a lower than the slant portion 611a.
Therefore, the base upper surface 611 may be formed in a shape in which the central portion from which the lower power module 64 slightly protrudes, and thus, even when water leakage occurs in the body 10, water does not flow into the lower power module 64 but flows toward the upper flat portion 611b.
An upper drain hole 613 may be formed in the upper flat portion 611b. The upper drain hole 613 is a passage for draining water flowing down to the base 60 under the base 60 and may be opened at the outer end of the upper flat portion 611b. A plurality of upper drain holes 613 may be formed in a direction facing each other. In addition, a hole guide 613a extending downward may be formed around the upper drain hole 613. The hole guide 613a may extend to a position adjacent to the bottom surface of the base body 62 and may guide water to be discharged to the lower drain hole 624 described below.
Meanwhile, the base cover rim 612 is formed at a height equal to or slightly higher than that of the bottom cover 56. The base cover rim 612 supports the outer lower end portion 113 when the body 10 is mounted.
The base body 62 may include a base bottom surface 621 formed in a disk shape having a size corresponding to that of the base cover 61, and a base rim 622 bent upward along the circumference of the base bottom surface 621. The center of the base body 62 may protrude upward, and a power module mounting portion 623 on which the lower power module 64 is mounted may be formed at the protruded central portion. The lower power module 64 may be disposed at a position corresponding to the upper power module 55 and may protrude upward through the lower module hole 611c. Therefore, when the body 10 is seated on the base 60, the upper power module 55 and the lower power module 64 may be in contact with each other to thereby become a state capable of supplying power.
One or more base coupling bosses 625 may be formed outside the power module mounting portion 623. The one or more base coupling bosses 625 may be spaced apart from the power module mounting portion 623. The one or more base coupling boss 625 may protrude upward and may extend through the base PCB 65 inside the base body 62. Screws may be coupled to the base coupling bosses 625, and the screws may be coupled to the base cover 61 by passing through the base coupling bosses 625. Therefore, the base body 62 and the base cover 61 may be firmly connected to each other by the screws.
The base PCB 65 may be mounted along a space between the power module mounting portion 623 and the base rim 622 and may be formed in a corresponding shape. The base PCB 65 may be connected to the lower power module 64 and a power connector 66 described below and may be configured to control the operation and power supply of the lower power module 64.
A lower drain hole 624 may be formed in the base bottom surface 621 adjacent to the base rim 622. The lower drain hole 624 may be formed at a position corresponding to the upper drain hole 613. A partition wall 624a extending upward may be formed in the circumference of the lower drain hole 624. The lower drain hole 624 is a passage through which the water flowing down through the upper drain hole 613 and the hole guide 613a is discharged to the outside of the base 60 and may pass through the base bottom surface 621. The partition wall 624a forms a space partitioned such that water flowing toward the lower drain hole 624 does not overflow to the outside, and the lower end of the hole guide 613a is accommodated inside the partition wall 624a. The partition wall 624a may be formed to be higher than the lower end of the hole guide 613a and may be connected to the base rim 622. A plurality of lower drain holes 624 and a plurality of partition walls 624a may be formed and may be spaced apart from each other.
In addition, a base hook 628 may be formed at one side of the base rim 622. The base hook 628 may be formed by cutting out a part of the base rim 622 and may extend upward. The end of the base hook 628 may be caught and restrained to a base connecting portion of the base cover 61. The base body 62 and the base cover 61 may maintain the connected state by the connection of the base hook 628 and the base connecting portion 614. A plurality of base hooks 628 may be formed along the base rim 622, and thus the circumferential surface of the base 60 may maintain the firmly connected state.
Meanwhile, a connector mounting portion 627, to which the power connector 66 is connected, may be formed at one side of the base body 62. The power connector 66 is a portion to which the end of a power cable including a plug may be connected, wherein the power cable is connected to a power outlet, wherein the power cable may be detachable. The power connector 66 may be exposed to the side of the base 60 and may be mounted on the connector mounting portion 627.
The connector mounting portion 627 is opened to allow the power connector 66 to be inserted thereinto, and the portion opened through the opening of the side plate 63 may be exposed to the outside. The opened end of the connector mounting portion 627 protrudes more than the end of the power connector 66 and is formed in a shape protruding from the side plate 63. Therefore, when water overflows or flows down to the base 60, water may be blocked from flowing into the side plate 63.
The side plate 63 connects the base body 62 to the base cover 61. The side plate 63 may form the side circumference of the base 60. The side plate 63 may be made of the same metal material as that of the body 10.
The side plate 63 and the body 10 may have the sense of unity in a state in which the body 10 is mounted on the base 60. So, no step is formed providing a flat outer appearance.
The upper and lower ends of the side plate 63 may be bent, and the ends of the base body 62 and the base cover 61 may be supported. A side opening 631, which is cut to expose the connector mounting portion 627, may be formed in the side plate 63.
Hereinafter, the operation of the electric kettle having the above-mentioned structure according to one embodiment of the present disclosure will be described.

[Operation of the Electric Kettle]

In order to use the electric kettle 1, the user connects the kettle to a power supply by inserting the power cable connected to the base 60 into the power outlet. In this state, water should be filled in the heating space 101 inside the body 10, and the body 10 is placed on the base 60.
When the body 10 is seated on the base 60, the upper power module 55 and the lower power module 64 are in contact with each other and are in a state in which power can be supplied from the base 60 to the body 10. The buzzer 563b outputs the notification sound when the body 10 is seated on the base 60, and the notification sound of the buzzer 563b makes it possible for the user to recognize that the body 10 is normally seated on the base 60 and is in an operable state.
Next, the user may start the heating of the heater 54 by operating the operation portion 323 of the handle 40. At this time, the user can check the set temperature through the display 322, and can operate the operation portion 323 to start heating water contained in the heating space 101.
The operation of the heater 54 may be started according to the operation of the operation portion 323, and the water contained in the heating space 101 may be heated by the heat of the heater 54 depending on the set temperature. When the temperature sensor 57 senses that the water inside the heating space 101 reaches the set temperature, the heater 54 stops operating and the electric kettle 1 completes the operation.
When the operation of the electric kettle 1 is completed, the buzzer 563b may output a beep sound notifying the completion of the operation. The user may hold the handle 40 and lift the body 10 to separate the base 60, and may tilt the electric kettle 1 to pour the heated water through the spout 311.
The electric kettle 1 can reduce or block or isolate heat conduction by the double structure of the body 10 in a state in which the heating of the water is completed. Therefore, even when the user comes into contact with the outer surface of the body 10, the safety of the user can be secured because the outer surface of the body 10 is not excessively hot. Even when the heater 54 is not in operation, the temperature of the heated water can be maintained for a long time.
Meanwhile, various embodiments other than the above-described embodiment are possible. Hereinafter, an electric kettle according to another embodiment of the present disclosure will be described in more detail with reference to the accompanying drawings.
Another embodiment of the present disclosure differs from the above-described embodiment in terms of the structures of the body and the bottom body. Therefore, other structures except for the structures of the body and the bottom body are the same as those in the above-described embodiment, and the detailed description thereof will be omitted and the same reference numerals will be used. It is noted that the components not shown are also the same as those in the above-described embodiment.
The electric kettle according to the embodiment of the present disclosure may expect the following effects.
In the electric kettle according to the embodiment of the present disclosure, the stainless steel body has the double structure of the inner body and the outer body. The heat insulation space may be formed between the inner body and the outer body. Therefore, it is possible to minimize the transfer of the heat generated during the heating of the water to the outside of the body and ensure the safety of the user.
Also, the water heated inside the body may be insulated by the structure of the body to maintain the heated temperature, and unnecessary reheating may be prevented by maintaining the temperature, thereby reducing the power consumption.
The body may be formed in the cylindrical shape in which the upper end and the lower end have the same diameter, and the body and the upper body mounted on the upper end of the body may be formed to have the same outer diameter and inner diameter. Therefore, the inside of the body may be easily cleaned and the inside may be easily checked, thereby facilitating the management.
The heating module may be inserted into the inside of the body to partition the inside of the body vertically, thereby securing a space in which water is heated and a space in which the heating module is provided. The heating module may be mounted by simply inserting the heating module into the inner body, thereby improving assembly workability and productivity.
In particular, the heating module includes the heating plate in which the elastically deformable support is formed. Therefore, the support may be restrained to the plate mounting portion inside the inner body by simply inserting the heating plate into the opening of the inner body without separate tools or equipment, thereby facilitating the assembling work and remarkably improving productivity.
In addition, the packing may be press-fitted between the plate rim of the heating plate and the inner body, and the packing mounting portion for restraining the packing may be formed inside the inner body, thereby completely sealing a space between the heating plate and the inner body.
In addition, since the packing is press-fitted, the heating plate may be effectively fixed without flowing inside the inner body.
In the inner body, the size of the opened upper surface may be equal to or larger than the size of the opened lower surface. Therefore, in a state in which the packing is removed, the heating plate may be detachable from the opened upper surface of the inner body, thereby facilitating the service of the heating module.
In addition, in the heating module, since all connecting structures are provided on the inner body forming the inside of the body, the outer body may secure the appearance of the cylindrical shape having the same upper and lower diameters without separate structures, thereby remarkably improving the appearance of the electric kettle.

Claims

An electric kettle comprising:
a body (10) formed by an outer body (11) and an inner body (12) having a cylindrical shape having an opened upper surface and an opened lower surface, wherein a heat insulation space (102) is formed between the outer body (11) and the inner body (12);

a heating module (50) configured to partition an inside of the inner body (12) vertically and to heat water inside the inner body (12);

a mounting portion (126, 127) formed on an inner surface of the inner body (12) and on which the heating module (50) is mounted;

a base (60) on which the lower surface of the body (10) is seated and which is configured to transfer power applied from an outside to the heating module (50) when the body (10) is seated, wherein the base (60) is formed by a base cover (61) including a base upper surface (611) forming the upper surface of the base (60), a base body (62) forming a lower surface of the base (60), and a side plate (63) forming a circumferential surface between the base body (62) and the base cover (61); and

a bottom cover (56) provided at the lower end of the inner body (12) to seal the heating module (50) at a lower side and forming a bottom surface of the body (10);

wherein the heating module (50) comprises:
a heating plate (52) inserted through the opened lower surface of the inner body (12) and restrained to the mounting portion (126, 127) to form a bottom surface of the inner body (12); and

a heater (54) provided on a lower surface of the heating plate (52) to generate heat; characterized in that:
an inner lower end portion (125), formed at the lower end of the mounting portion (126, 127), forming the lower end of the inner body (12) extends further downward than the outer body (11) and is connected to the bottom cover (56);

an outer lower end portion (113) formed at an end of the outer body (11) corresponding to the mounting portion (126, 127) is bent at its lower end towards the inner body (12) and is connected to the outer surface of the inner body (12) at the upper end of the inner lower end portion (125);

the base cover (61) includes a base cover rim (612) protruding upward along the circumference of the base upper surface (611) and formed at a height equal to or higher than that of the bottom cover (56) and configured to support the outer lower end portion (113) when the body (10) is mounted thereon; and

wherein the bottom cover (56) protrudes further downward than the outer lower end portion (113) and is accommodated in the base (60).
The electric kettle according to claim 1, wherein the inner body (12) is formed in a cylindrical shape having an opened upper surface and an opened lower surface, and the opened upper surface of the inner body (12) is formed to be equal to or larger than the opened lower surface of the inner body (12).
The electric kettle according to claim 1 or 2, wherein the heating plate (52) is made of the same metal material as that of the inner body (12), wherein the heating plate (52) comprises at least one of:
a plate portion (521) formed in a disk shape and forming an upper surface of the heating plate (52);

a plate rim (522) extending downward along a circumference of the plate portion (521); and

a plurality of supports (524) disposed along a circumference of the plate rim (522) and facing outward as extending downward, preferably a diameter of a lower end of the support (524) is formed to be larger than a diameter of the opened lower surface of the inner body (12), such that the support (524) is elastically deformed in a process in which the heating plate (52) is inserted into the inner body (12).
The electric kettle according to claim 3, wherein the mounting portion comprises a plate mounting portion (126) which is recessed from the inside to the outside of the inner body (12) and to which the lower end of the support (524) is supported when the heating plate (52) is inserted into the body (10).
The electric kettle according to claim 4, wherein an inner diameter of the plate mounting portion (126) is formed to correspond to a diameter of the lower end of the support (524).
The electric kettle according to any one of the preceding claims, wherein a packing (51) is provided between the inner surface of the inner body (12) and the heating plate (52), to seal a space between the inner body (12) and the heating plate (52), preferably the packing (51) is provided between the inner surface of the inner body (12) and the plate rim (522) to seal a space between the inner body (12) and the plate rim (522).
The electric kettle according to claim 6, wherein the mounting portion further comprises a packing mounting portion (127) formed above the plate mounting portion (126) and protruding toward the plate rim (522), wherein the packing (51) is press-fitted into the packing mounting portion.
The electric kettle according to claim 7, wherein the packing (51) comprises:
a packing groove (5111) recessed in a shape corresponding to the packing mounting portion (127) and in which the packing mounting portion (127) is accommodated; and

a sealing portion (512, 513) protruding outward from an upper side and a lower side of the packing groove (5111) so as to be in close contact with the inner surface of the inner body (12).
The electric kettle according to claim 8, wherein an inner surface of the packing (51) is formed in a planar shape facing the plate rim (522), and the entire inner surface of the packing (51) is pressed in an outward direction by the plate rim (522).
The electric kettle according to claim 7, wherein the heating plate (52) further comprises a bent portion (523) protruding outward from a lower end of the plate rim (522) to support a lower end of the packing (51) at a lower side, wherein the bent portion (523) is disposed further below than the packing mounting portion (127).
The electric kettle according to any one of the preceding claims, wherein the heating module (50) further comprises a heater base (53), preferably made of an aluminum material, the heater (54) being fixed and mounted to the heater base (53), the heater base (53) being in contact with the heating plate (52) below the heating plate (52), wherein the heater base (53) is formed in a shape corresponding to the heating plate (52).
The electric kettle according to claim 11, wherein the heater base (53) is molded of an aluminum material with the heater (54) by die casting, and the heater (54) is disposed inside the heater base (53).
The electric kettle according to any one of the preceding claims, wherein the heating module (50) comprises an upper power module (55) mounted on the heating plate (52) to supply power to the heater (54), wherein, when the body (10) is seated on the base (60), the upper power module (55) is in contact with a lower power module (64) provided at the base (60) to receive power.
The electric kettle according to any one of the preceding claims, wherein one or more body holes (114) are formed along the outer lower end portion (113) when the outer lower end portion (113) is connected to the outer surface of the inner body (12), and wherein the body holes (114) communicate with the space (102) formed between the outer body (11) and the inner body (12).